Sandvik Coromant 7859114 Turning Insert DCMT32.52-PR 4415

Product Description

The SANDVIK COROMANT 7859114 is a solid carbide turning insert designed for external and internal turning operations on CNC lathes and turning centers. Designated DCMT32.52-PR 4415, it carries a 55-degree diamond insert shape with a 7-degree relief angle and a 0.79 mm (0.0313 inch) corner radius. The insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance and thermal protection during continuous and interrupted cuts. It belongs to the CoroTurn 107 series and is intended for use by machining professionals performing precision turning work, particularly on steel and cast iron workpieces.

This insert is primarily suited for steel turning applications (ISO material code P) and secondarily for cast iron (ISO material code K). It is sized for toolholders requiring a 3/8-inch (9.53 mm) inscribed circle. The PR chip breaker geometry manages chip flow during medium-duty turning passes. With two cutting edges per insert, it provides a cost-effective edge count for production and job-shop environments. The neutral hand orientation makes it compatible with standard right-hand and certain left-hand DCMT-style toolholder pockets.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for extended tool life on steel and cast iron
• 55-degree diamond insert shape (shape code D) for versatile turning profiles
• 0.79 mm corner radius (0.0313 inch) for general-purpose finishing and semi-finishing
• PR chip breaker geometry for controlled chip evacuation at medium feeds and depths
• Two cutting edges per insert for efficient edge utilization
• Clamp and screw holding method compatible with standard DCMT toolholder pockets

Compatibility

Designed for use in DCMT-style toolholder pockets requiring a 3/8-inch inscribed circle. ISO code DCMT 11 T3 08-PR 4415. Manufacturer catalog reference: DCMT 3(2.5)2-PR 4415. Insert size code 11T3. Suitable for CoroTurn 107 series toolholders.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. The machine spindle must be fully stopped and the turret indexed to a safe position before seating or replacing inserts. Secure the insert using the appropriate clamp or torx screw per the toolholder manufacturer's instructions. Inspect the pocket seating surface for chips or debris before placing the insert to ensure proper contact and runout.